A Level Psychology OCR Practice Exam

Question: 1 / 630

How many participants were included in the first experiment of Casey et al (2011)?

26 participants

32 participants

59 participants

In the first experiment of the study conducted by Casey et al. (2011), a total of 59 participants were included. This research focused on the cognitive and neural mechanisms underlying self-control, and the study aimed to examine how these mechanisms vary across individuals who had been identified as low or high in self-control in earlier studies. The number of participants is significant because it allows researchers to gather enough data to make reliable comparisons and draw valid conclusions regarding the differences in brain activity and behavioral responses between the groups categorized by their self-control levels. The specific choice of 59 participants reflects a well-considered sample size that balances the need for sufficient data while remaining manageable for intensive research methodologies like neuroimaging. Hence, the correct figure for participants in the first experiment is 59.

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62 participants

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